20320243000 has 64 divisors (see below), whose sum is σ = 47663834400. Its totient is φ = 8108531200.

The previous prime is 20320242961. The next prime is 20320243081. The reversal of 20320243000 is 34202302.

It is a super-3 number, since 3×20320243000³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394752 + ... + 443248.

Almost surely, 2^20320243000 is an apocalyptic number.

20320243000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20320243000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23831917200).

20320243000 is an abundant number, since it is smaller than the sum of its proper divisors (27343591400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20320243000 is a wasteful number, since it uses less digits than its factorization.

20320243000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48937 (or 48923 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 20320243000 its reverse (34202302), we get a palindrome (20354445302).

The spelling of 20320243000 in words is "twenty billion, three hundred twenty million, two hundred forty-three thousand".